USS RONALD REAGAN, At sea (June 19, 2006) â In the Pacific Ocean, USS Lake Champlain (CG 57) cruises as part of the Ronald Reagan Carrier Strike Group, which is currently participating in Valiant Shield 2006, a major military exercise off the coast of Guam involving 28 naval vessels including three carrier strike groups. Approximately 290 aircraft and more than 20,000 service members from the Navy, Army, Air Force, Marine Corps and U.S. Coast Guard are taking part in the exercise. Official U.S. Navy photo by Photographerâs Mate 2nd Class (AW/SW) Aaron Burden.